Where the bulk of your story happens. The events in this section revolve around a Dramatic Question/Main Tension that engages the audience’s Hopes and Fears.
In Star Wars the Dramatic Question is “Can our heroes get R2-D2, and thus the Death Star Plans, back to the Rebels? In Fight Club, The Dramatic Question is “Will Fight Club be successful?” In most formulaic romantic comedies it’s: “Will the Hero get the Girl?”
Again, this is the bulk of your story, so make sure you have a very strong Main Tension.